KB5002847: This security update resolves Microsoft Office remote code execution vulnerability.

Description of the security update for SharePoint Server 2019 Language Pack: March 10, 2026 (KB5002847)

Summary
Important:

• If you're running 2013-type workflows, you mustinstall the August 2025 update for SharePoint Workflow Manager to your farm before you install this cumulative update.​​​​​​​
• If you're currently running the Classic version of Workflow Manager, you must enable the debug flag to continue using it.
  ​​​​​​​
  $farm = Get-SPFarm
  $farm.ServerDebugFlags.Add(53601)
  $farm.update()
  iisreset
• This security update resolves Microsoft Office remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2026-​​​​26113.

Notes:

• This is build 16.0.10417.20102 of the security update package.
• To apply this security update, you must have the release version of Microsoft SharePoint Server 2019 installed on the computer.